全球分布和进化过渡的花的对称性在芽植物
Yunyun Wang1,2, Ao Luo2, Tong Lyu2,3
1School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, China.
Science advances
|October 25, 2023
概括
花的对称性模式受到度和气候的影响. 双向对称或双向对称性可能不会像以前想象的那样驱动血管精子的多样化.
科学领域:
- 进化生物学 进化生物学
- 生态生态学 生态生态学
- 植物学 植物学
背景情况:
- 植物对称性对于植物与授粉者相互作用和血管精子多样化至关重要.
- 时空模式和花对称性的驱动因素在很大程度上仍然未知.
研究的目的:
- 研究全球地理模式和花对称性的宏观进化动态.
- 确定影响花对称分布的环境驱动因素.
- 重新评估花对称性在血管精子多样化中的作用.
主要方法:
- 编制了279,877种苗种的花对称性数据.
- 分析了物种的分布和族系.
- 估计了花对称性的全球模式和宏观进化动态.
主要成果:
- 动态形态 (半径对称) 种类的频率随着度的增加而增加;双边形态 (双边对称) 种类的频率下降.
- 太阳辐射,当前和过去的温度与花对称模式相关联.
- 从动态形态转变为对象形态的转变主导了进化,但随着代的冷却,这种转变率下降了.
- 齐戈莫尔菲并没有始终有利于跨分类的血管精子多样化.
结论:
- (古) 气候显著影响着花对称的时空模式.
- 齐戈形态在血管精子多样化中的作用可能不如以前所认为那么明显.
- 挑战了关于花的对称性对植物进化影响的现有范式.
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